Oops off topic again;)

Yeah so I trust in my mate who sets his Quads up the same way, just for this type of board:)
Looking forward to some rippers on it, as this is the first quad I've had..!
It has a 5 fin set up, so surfing like TOS 3-4ft do you think ID would be good to put a tiny 5th on or just surf as a quad, have you experienced the little 5th fin before???
I know I just have to check it myself.
Cheers ID

The knubster fin is a marketing ploy . If your rear quad fins arent big enough you will then need a fifth little tiny half fin .

I feel one of the things that make a quad fast is the lack of drag from a centre fin. Maybe they just feel fast? As you say you need to try it to know.
In saying that, I reckon Ill have to get some old side fins and scallop them out with a grinder like those futures you and Dave use. Just to feel how they work. I have some 50/50 trailers.
My gut feeling is a centre fin will make it feel a lot more like a thruster.
A 50/50 foil on the trailing fins definitely make a quad feel a lot more like a thruster even without a centre fin.
That is a quads I use come off the top with more speed whereas thrusters tend to pivot off the top.
Wasn't the topic bottom turns?

Or just try your Mannion 5'10 as a thruster. That Mayhem I showed you goes way better as a thruster than a quad.

I tried a nubster fin for a few weeks, but i didn't really get into it, for me it felt like i lost some of the positives of a quad but didn't really gain the positives of a thruster, now I either quad or thruster.

Interesting though to try a proper little centre fin, but you would think you would need to go smaller (or more upright) side rears to help loosen it up, that guy in Hawaii i think his name is Greg Griffin does boards that are meant to be ridden as full five fins.

BTW. if you decide to mess around with a nubster in futures, if its a tight fit id sand it a little, once there in there so damn hard to get out.

There's a little job for Roy Stewart ....design and 3d print a little centre fin/nubster

Freeride just read your report on the fin of Roys you have been trying in your bonza......sounds good ?

EDIT: sorry Roy- you have already made a Blef nubster.

https://www.swellinfo.com/forum/showthread.php?14225-Mixing-Fins-on-a-Qu…

Vector fins with concave instead of flat ; less speed down the line but more grip in turns and turning arc is shorter . Vectors seem good for turns Imo

Seems to be Caml, I agree :)

Here's some nice footage of kelly riding a quad in his world title winning year.

I think Kelly said after riding a quad in his heat at the Box yesterday that a thruster would have been a better choice ?

Didn't see it. Can find quads a tad "vague" for what feels like a short pause right after standing up. Doesn't stop me loving them but just ordered new quad 6'0 x 19' x 2' 1/2" swallow tail with parabolic rails yew.